Flag General Physics> Kinematics...
question mark

A body falls From a height of 200m if gravitional ceases after 2 sec find the further time required to reach grounf

aaaa aaaa , 15 Years ago
Grade 9
anser 2 Answers
vikas askiitian expert

after 2 seconds velocity is v

v = u+at

u=0 ,a=-g

v = -2g =-20m/s               (downward)

distance covered in 2 second = S

 v2 = u2+2aS

u=0 , a=-g

S = v2/2a = 400/20 =20

it has covered 20 m so remaining distance from ground is 200-20 = 180m

now gravity there is no gravity effect so a=0

 now we use speed = distance/time

      t = d/v

   distance = 180 ,velocity = 20

    t = 180/20 = 9sec

thus body will take further 9 sec to reach the ground...

ApprovedApproved
Last Activity: 15 Years ago
Fawz Naim

After travelling for 2sec the gravity ceases then the body will never reach the ground as there is no force pulling it down

Last Activity: 15 Years ago
star
LIVE ONLINE CLASSES

Prepraring for the competition made easy just by live online class.

tv

Full Live Access

material

Study Material

removal

Live Doubts Solving

assignment

Daily Class Assignments